.my_messages {
    position: relative;
    width: 900px;
    margin: auto;
    box-sizing: border-box;
    padding-top: 30px;

    .oper {
        position: fixed;
        z-index: 3;
        top: 300px;
        right: 0;
        width: 80px;
        height: 30px;
        text-align: center;
        line-height: 30px;
        border: 1px solid #2395f1;
        border-radius: 4px;
        background-color: #d5ebfc;
        user-select: none;
        -webkit-user-select: none;
        cursor: pointer;
    }
}
